PowerBond Harmonic Balancer - Iron - Black Paint - Internal Balance - GM LS-Series 10290 These discs are made for

These discs are made for Centerforce I and II pressure plates

Precision paddles of a zinc-plated reluctor pass a maintenance-free magnetic pick-up creating a trigger signal that tells the MSD to fire

the bearing and race surfaces are micro-scopically etched with a pattern to retain grease

patented blend of high-performance fibers

PowerBond Harmonic Balancer - Iron - Black Paint - Internal Balance - GM LS-Series 10290 These discs are made forProduct Description: Harmonic Balancer 7. 520 in OD Iron Black Paint Internal Balance GM LS Series Sold Individually PowerBond produces steel harmonic balancers that are designed to outperform conventional harmonic balancers without the weight penalty of many competitive balancers.